EP3668736B1 - Tragkasten für batterie - Google Patents

Tragkasten für batterie Download PDF

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Publication number
EP3668736B1
EP3668736B1 EP18782484.2A EP18782484A EP3668736B1 EP 3668736 B1 EP3668736 B1 EP 3668736B1 EP 18782484 A EP18782484 A EP 18782484A EP 3668736 B1 EP3668736 B1 EP 3668736B1
Authority
EP
European Patent Office
Prior art keywords
housing
support structure
battery
assembly
skin
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP18782484.2A
Other languages
English (en)
French (fr)
Other versions
EP3668736A1 (de
Inventor
Sergio Da Costa Pito
Emmanuel Henon
Jean-Nicolas Guyomard
Emmanuel Rudloff
Guillaume LAIR
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Valeo Systemes Thermiques SAS
Original Assignee
Valeo Systemes Thermiques SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Valeo Systemes Thermiques SAS filed Critical Valeo Systemes Thermiques SAS
Publication of EP3668736A1 publication Critical patent/EP3668736A1/de
Application granted granted Critical
Publication of EP3668736B1 publication Critical patent/EP3668736B1/de
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B60L50/64—Constructional details of batteries specially adapted for electric vehicles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
    • H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
    • H01M50/227—Organic material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • H01M50/238—Flexibility or foldability
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • H01M50/24—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
    • B60K2001/0405—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion characterised by their position
    • B60K2001/0438—Arrangement under the floor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2306/00—Other features of vehicle sub-units
    • B60Y2306/01—Reducing damages in case of crash, e.g. by improving battery protection
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2410/00—Constructional features of vehicle sub-units
    • B60Y2410/10—Housings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane

Definitions

  • the present invention relates to a support box for a battery pack, and more particularly to a support box for a battery pack for motor vehicles of the hybrid type or of the electric type.
  • the invention also relates to an assembly comprising such a support box.
  • Boxes containing electric batteries intended for electric vehicles are known. They generally comprise a battery, a battery management system, a cover and a lower structure making it possible to accommodate the battery. More particularly, the lower structure serves as a support for the battery. This presents a considerable weight, a weight which is only increasing with the development of 100% electric vehicles.
  • reinforcing means In order to improve the rigidity of the case, the use of reinforcing means has been mentioned. These reinforcement means are generally in the form of metal reinforcement bars placed under the case. However, the battery packs created are particularly heavy and increase the consumption of the motor vehicle.
  • One of the aims of the present invention is to remedy at least partially the drawbacks of the prior art and to propose a housing for supporting a light and inexpensive battery pack.
  • the invention proposes a battery support box according to claim 1.
  • Another aspect of the invention is an assembly comprising a box according to the invention, an electric battery being inserted into the housing so as to be sandwiched between the support structure and the cover.
  • a seal can be positioned between the cover and the upper edge of the border.
  • electric vehicles V are generally equipped with a battery pack B which is installed under the vehicle V, the size of the battery pack B can vary according to the needs of said vehicle V. This is positioned under the chassis and fixed to the means of a support box 1.
  • a support box 1 according to the invention is represented on the figure 2 .
  • This comprises a cover 2 and a support structure 3 forming a housing 4 in which the battery B of the electric vehicle is housed.
  • the cover 2 preferably consists of means for attachment to the vehicle chassis. These known connecting means can, for example, be glue or even a screw system.
  • cowl 2 Since the cowl 2 is not subject to strong weight constraints, it can easily be made of any plastic material, thus making it possible to reduce the total weight of the vehicle and consequently its consumption.
  • the support structure 3 shown in the picture 3 also consists of a substantially planar main face 3a.
  • the main face 3a is shown as being of rectangular shape. However, it can be in any form suitable for those skilled in the art.
  • the cover 2 has a shape substantially equivalent to that of the main face 3a so as to completely cover the battery inserted in the housing created between the cover 2 and the face 3a.
  • a border 3b is present on at least part of the periphery of the main face 3a, preferably on the entire periphery.
  • This border 3b and the main face 3a can be in one piece. However, they can also be in the form of two components attached later.
  • the border 3b is preferably composed of a substantially flat upper edge 34b and on which the cover 2 comes to rest when the box 1 is installed on the chassis of the electric vehicle.
  • the border 3b is preferably composed of two side walls 35b, 36b attached by the upper edge 34b. These side walls 35b, 36b are preferably vertical (substantially perpendicular to the main face 3a), but they can also be substantially inclined, as shown in the appended figures. This inclination makes it possible to improve the rigidity of the box 1 and thus better support the heavy loads due to the battery.
  • the upper edge 34b is equipped with a seal making it possible to close the box 1 in a sealed manner so as to avoid any malfunction of the battery.
  • the support structure 3 is made in a single layer, thus allowing considerable savings and being suitable for batteries of reduced size.
  • the support structure 3 consists of a lower skin 32 and an upper skin 31. These two skins 31, 32 delimit a housing 33a, 33b. They can have variable thicknesses which depend on the rigidity desired by the user and therefore on the weight of the battery. Thinner skins 31, 32 make it possible to reduce the quantity of material used and thus reduce manufacturing costs.
  • the two skins 31, 32 can create the main face 3a and the border 3b, or only one of the two components 3a, 3b.
  • the upper skin 31 comprises, at the edge 3b, a rim 311 and the lower skin 32 comprises a rim 321.
  • the rims 311, 321 are installed so as to come in intimate contact with each other.
  • a means of hermetic closure is then used to close the case 1 and thus protect the battery after its installation on the motor vehicle.
  • This hermetic closure means can, for example, be an overmolded seal or even glue.
  • the flanges 311, 321 are placed at the level of the outer side wall 35b of the border 3b, preferably at mid-height of the border 3b.
  • the support structure 3 is made up of several materials allowing better resistance to the stresses exerted and thus obtaining a better distribution of the load. The applicant noticed that a better resistance was obtained when different types of materials were combined.
  • the structure 3 is formed by processes such as a thermo-molding process and/or an injection process.
  • At least one zone, preferably all of it, of the support structure 3 is made by combining a ductile material, a resistant (or high stiffness) material and an assembly material. This particular combination of materials makes it possible to withstand heavy loads as well as temperature constraints. In addition, it allows the battery to be better protected from possible shocks due to the throwing of stones and/or pebbles during use of the vehicle.
  • the ductile material that is to say able to withstand a large plastic deformation, preferably has a tensile capacity greater than 50%. This material will make it possible to compensate for any deformations while preserving the integrity of the case 1. Such a material is capable of deforming without breaking in the event of an impact. In other words, it is able to deform plastically without breaking.
  • This material is preferably an unreinforced polymer, such as for example a modified polypropylene or even any polyamide, polyethylene comprising a certain percentage of elastomers.
  • the resistant material preferably has an elastic limit in tension greater than 350 MPa. It may, for example, be in the form of a thermoplastic composite material comprising reinforcing fibers. These fibers can, for example, be carbon fibers or even glass fibers.
  • the fibers may in particular be glass and/or carbon fibers. These fibers can be staple fibers and thus allow manufacturing by injection.
  • the fibers can be continuous fibers and allow thermoforming. These manufacturing methods are not limiting and it is quite possible to imagine any other known manufacturing method.
  • the fibers can be aligned in the same direction or in different directions.
  • the support structure 3 comprises a third material serving as an assembly material which makes it possible to reinforce said support structure 3 and to create interfaces for assembly.
  • This assembly material is an injectable plastic material.
  • Said assembly material has a modulus of elasticity comprised between 4 GPa and 12 GPa and an elastic limit comprised between 70 MPa and 150 MPa.
  • the housing 33b created by the two skins 31, 32 at the level of the edge 3b, comprises reinforcing elements 37.
  • These reinforcing elements 37 may, for example, be in the form of ribs or even in the form of reinforcing bars. These elements 37 make it possible to stiffen the case 1 and avoid damaging the battery pack in the event of an accident.
  • reinforcing elements 38a, 38b can also be located between the two skins 31, 32 at the level of the main face 3a. These reinforcements 38a, 38b make it possible to further improve the rigidity of the case 1 and to avoid shocks caused by pebbles and stones coming from under the car.
  • reinforcing elements 38a can, for example, be ribs, studs, bars, etc. They are preferably integrated between the two skins 31, 32. In the same way as for the rest of the support structure 3, these elements 38a can be made by molding or injection at the same time as the creation of the case 1. They can optionally be added later by injection.
  • the figure 7 represents an embodiment similar to that of the figure 6 , apart from the fact that the upper skin 31 is wavy.
  • the undulations created make it possible to create an elastic effect making it possible to better hold the battery in place once it is placed in the box 1.
  • the reinforcing elements 38b are then placed between the undulations created by the upper skin 31.
  • the reinforcing elements 37, 38a, 38b can, for example, be made of plastic material, of composite material or even of metal. They are preferably made by processes such as an injection process, or else an extrusion process.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Electrochemistry (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Power Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Battery Mounting, Suspending (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)

Claims (9)

  1. Tragkasten (1) für eine Batterie, welcher eine Abdeckhaube (2), die an das Fahrgestell eines Fahrzeugs ansetzbar ist, und eine Tragstruktur (3), die geeignet ist, eine elektrische Batterie (B) aufzunehmen, aufweist, wobei die Tragstruktur (3) aus einer Hauptseite (3a) besteht, von der wenigstens ein Teil des Umfangs mit einer Einfassung (3b) ausgestattet ist, wobei die Tragstruktur (3) durch Kombination mehrerer Materialien hergestellt ist, wobei diese Materialien ein duktiles Material, ein widerstandsfähiges Material und ein Montagematerial umfassen,
    dadurch gekennzeichnet, dass das Montagematerial ein spritzbares Kunststoffmaterial ist, das geeignet ist, den Kasten zu verstärken und/oder Schnittstellen für die Montage zu erzeugen.
  2. Kasten (1) nach Anspruch 1, dadurch gekennzeichnet, dass das widerstandsfähige Material eine Zugstreckgrenze aufweist, die größer als 350 MPa ist.
  3. Kasten (1) nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass das duktile Material eine Zugdehnfähigkeit aufweist, die größer als 50 % ist.
  4. Kasten (1) nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass das Montagematerial einen Elastizitätsmodul zwischen 4 GPa und 12 GPa und/oder eine Streckgrenze zwischen 70 MPa und 150 MPa besitzt.
  5. Kasten (1) nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Einfassung (3b) von zwei im Wesentlichen geneigten Seiten (35b, 36b) gebildet wird, die durch einen zur Hauptseite (3a) parallelen oberen Rand (34b) miteinander verbunden sind.
  6. Kasten (1) nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Tragstruktur (3) aus einer unteren Haut (32) und einer oberen Haut (31) besteht, wobei diese Häute (31, 32) eine Aufnahme (33a, 33b) begrenzen.
  7. Kasten (1) nach Anspruch 6, dadurch gekennzeichnet, dass die untere Haut (32) eben ist und die obere Haut (31) gewellt ist, wobei diese obere Haut (31) untere Punkte, die sich mit der unteren Haut (32) in Kontakt befinden, und obere Punkte, die dazu bestimmt sind, mit der elektrischen Batterie (B) in Kontakt zu kommen, aufweist.
  8. Tragkasten (1) nach einem der Ansprüche 6 oder 7, dadurch gekennzeichnet, dass in der Aufnahme (33a, 33b) Verstärkungselemente (37, 38a, 38b) angeordnet sind.
  9. Anordnung, welche einen Kasten (1) nach einem der vorhergehenden Ansprüche aufweist, wobei eine elektrische Batterie (B) an der Hauptseite (3a) anliegend eingesetzt ist, derart, dass sie zwischen der Tragstruktur (3) und der Abdeckhaube (2) eingespannt ist.
EP18782484.2A 2017-10-04 2018-09-18 Tragkasten für batterie Active EP3668736B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1759271A FR3071789B1 (fr) 2017-10-04 2017-10-04 Boitier de support pour batterie
PCT/FR2018/052282 WO2019068983A1 (fr) 2017-10-04 2018-09-18 Boitier de support pour batterie

Publications (2)

Publication Number Publication Date
EP3668736A1 EP3668736A1 (de) 2020-06-24
EP3668736B1 true EP3668736B1 (de) 2022-06-22

Family

ID=60202251

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18782484.2A Active EP3668736B1 (de) 2017-10-04 2018-09-18 Tragkasten für batterie

Country Status (5)

Country Link
US (1) US20200343501A1 (de)
EP (1) EP3668736B1 (de)
CN (1) CN111655523A (de)
FR (1) FR3071789B1 (de)
WO (1) WO2019068983A1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN218602596U (zh) * 2022-12-01 2023-03-10 宁德时代新能源科技股份有限公司 电池的下箱体、电池以及用电装置
KR20240167155A (ko) * 2023-05-19 2024-11-26 현대자동차주식회사 차량의 배터리 케이스
EP4531179A1 (de) * 2023-09-28 2025-04-02 Nemak, S.A.B. de C.V. Batterieträgerbauteil, batterieträger sowie verfahren zur herstellung eines batterieträgerbauteils sowie eines batterieträgers

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US5620057A (en) * 1994-12-19 1997-04-15 General Motors Corporation Electric vehicle battery enclosure
JP3480286B2 (ja) * 1997-12-08 2003-12-15 日産自動車株式会社 電気自動車のバッテリフレーム構造
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KR101315741B1 (ko) * 2012-03-23 2013-10-10 현대자동차주식회사 치수안정성이 우수한 전기자동차용 배터리 팩 케이스 어셈블리와 그 제조 방법
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Also Published As

Publication number Publication date
CN111655523A (zh) 2020-09-11
US20200343501A1 (en) 2020-10-29
EP3668736A1 (de) 2020-06-24
FR3071789A1 (fr) 2019-04-05
WO2019068983A1 (fr) 2019-04-11
FR3071789B1 (fr) 2020-07-17

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